.TH lis_esolver_get_residualnorm 3 "28 Aug 2014" "Man Page" "Lis Library Functions"

.SH NAME

lis_esolver_get_residualnorm \- get the relative residual norm for the specified eigenpair from the eigensolver

.SH SYNOPSIS

#include "lis.h"

\fBLIS_INT lis_esolver_get_residualnorm\fR(\fBLIS_ESOLVER esolver\fR, \fBLIS_REAL *residual\fR);

.SH DESCRIPTION

Get the relative residual norm \fI||lx - Ax||_2/||lx||_2\fR for the specified eigenpair from the eigensolver.

.SH INPUT

.IP "\fBesolver\fR"
The eigensolver

.SH OUTPUT

.IP "\fBresidual\fR"
The relative residual norm \fI||lx - Ax||_2/||lx||_2\fR

.SH EXIT STATUS

The following exit values are returned:
.IP "0"
The process is normally terminated
.IP "unspecified"
An error occurred

.SH SEE ALSO

.BR lis (3)
.PP
http://www.ssisc.org/lis/

